Cocoa seeds were maintained at different conditions of temperature and relative humidity, to know which were the best ones for preservation of the viability of those seeds. From the results of the experiment, the following conclusions were drawn: a) The temperature of 5°C was highly injurious to the seeds. b) Seeds of cocoa stored at the temperature of the laboratory, but kept in semiclosed glass containers under high relative humidity, preserved their viability well, during all the time of the experiment. At the 90 days test, these seeds presented 72% of germination.